Update svn:ignore with regards to new GYP generated projects

TEST=none
BUG=slows down the try server


git-svn-id: http://src.chromium.org/svn/trunk/deps/support@19914 4ff67af0-8c30-449e-8e8b-ad334ec8d88c
tree: f6099e0ec100c4180831f900df4f8f177f61ba90
  1. support.gyp